3M ECAM-20 MM-D Manual de usuario
June 2011
78-8140-3820-0-B
3M™External Cable Assembly Module (ECAM)
Double Cable Entry Port
ECAM-20 MM-D
Instructions
3
278-8140-3820-0-B
1.0 General
The 3M™External Cable Assembly Module (ECAM) Double Cable Entry Port ECAM-20 mm-D is designed to
accept fiber optic loose buffer tube & central tube ribbon type cables with external diameters of up to
20 mm /0.78". The kit will accommodate cables with single or dual cable strength members (CSM).
2.0 Kit Contents
2.1 For all loose buffer tube and dielectric central tube cables.
AB
L
C
O
J
E
H
K
I
D
G
F
N
M
P
A. Mastic tape rolls (1)
B. Oval gasket
C. Sheath scuff
D. Silicone lubricant
E. Cable clamp shells (4 sets)
F. Vinyl caps (2)
G. Alcohol wipe
H. Cable clamp with 3 mtg. screws
I. Washers set (1 set shown) (4 sets)
J. Cable ties
K. Cable gauge decal
L. Mastic rope
M. Housing bottom half
N. Housing top half with 3 mtg. screws
O. Strength member clamps (2)
P. CSM bracket (riveted to housing bottom)
Q. Instruction Manual 78-8140-3820-0-B (Not shown)
3
78-8140-3820-0-B
2.2 For armored loose tube and armored central tube cables.
J D FOC
H
P
L
M
G
B
E
A
K
I
N
A. Mastic tape roll
B. Oval gasket
C. Sheath scuff
D. Silicone lubricant
E. Cable clamp shells (4 sets)
F. Alcohol wipe
G. Cable clamp w/3 mtg. screws
H. Washers set (4 sets)
I. Cable ties
J. Cable gauge decal
K. Mastic rope
L. Housing bottom half
M. Housing top half w/3 mtg. screws
N. Number 6 gauge ground wire (2)
O. 3M™Scotchlok™Shield Bond Connector 4460-D/FO-SS (2)
P. Instruction Manuals
Visually inspect all components. If any component is missing or appears damaged, do not install. Call 3M
customer service at 1-800-426-8688 for a replacement product.
478-8140-3820-0-B
3.0 Dielectric Main Cable Preparation
96" MAX (2.4 m)
SHEATH REMOVED
TYPICAL CABLE PREP
FOR EXPRESS BUFFER
TUBE CABLE
6"(150 mm)
TRIM SINGLE O
R
DUAL CSM RODS
3" (75 mm)
SCUFF SHEATH
ON ALL CABLES
96" MAX (2.4 m)
SHEATH REMOVED
TYPICAL CABLE PREP
FOR EXPRESS
CENTRAL TUBE CABLE
6" (150 mm)
TRIM SINGLE O
R
DUAL CSM RODS
8" (200 mm)
CENTRAL TUBE
72" (1.8 m)
SHEATH REMOVED
TYPICAL CENTRAL TUBE
CABLE PREP
6" (150 mm)
TRIM SINGLE O
R
DUAL CSM RODS
8" (200 mm)
CENTRAL TUBE
TRIMMED
EXPRESS LOOSE BUFFER TUBE CABLE
EXPRESS CENTRAL TUBE CABLE
BRANCH OR DROP CABLE
Armored Cable Central Strength Member
6" (150 mm)
TRIM CSM ROD(S)
4" (100 mm)
LEAVE HALF OF CABLE SHEATH
W/METALLIC SHIELDING TO
ATTACH GROUNDING
MEASURE SHEATH OPENING
TO HERE
Otherwise same as dielectric cable preparation.
Armored Central Tube Cable with Dual Strength Members
4 1/4" (108 mm)
LEAVE HALF OF CABLE SHEATH
W/METALLIC SHIELDING TO
ATTACH GROUNDING
4 1/4" (108 mm)
CENTRAL TUBE TRIMMED
6" (150 mm)
TRIM CSM ROD(S)
72" (1.8 m)
SHEATH REMOVED
5
78-8140-3820-0-B
4.0 For Armored Cables Only
4.1 The following two grounding kits are available:
3M™Internal Ground Kit
ECAM-GND-6-AWG
80-6113-1702-7
3M™Internal Ground Kit
ECAM-GND-14-AWG
80-6113-1704-3
4.2 Prepare cable as described in the previous
armored cable prep setion. Wrap the sheath with
Scotch®All Weather Telephone Vinyl Plastic
Tape 88T or equivalent to protect fiber from the
sharp cable sheath edges. Do not wrap last inch
(25 mm) of the cable sheath.
4.3 Prepare the closure base by locating the ground
studs inside the closure base. Loosen the upper
nut three to four turns on the ground stud inside
the closure using a ½-inch (13 mm) nut driver.
It is not necessary to remove the small vinyl
caps.
4.4 Place the forked end of the ground wire between
the pair of washers. Re-torque the ground stud
nut to 30 inch-lbs.
678-8140-3820-0-B
4.5 Position and route the grounds to minimize
interference with cable ports and splicing. Cable
end ground connections are made after the
cables are installed in the base.
Note: The installation and removal of the 20mm-D
is the same for both the metallic and the non-
metallic versions. For demonstration purposes,
the metallic version will be used throughout the
instruction manual.
5.0 3M™External Cable Assembly Module (ECAM) Double 20 mm-D
Removal
5.1 Using a 3/8-inch (10 mm) nut driver, loosen the
clamp screws on the ECAM assembly. Pull the
clamps outward and rotate as shown. Lightly
re-tighten screw to hold clamps in place.
5.2 Loosen the three screws and separate the top and
bottom halves of the 20 mm ECAM double cable
assembly using a 3/8-inch (10 mm) nut driver.
Note: Keep the short screw in location shown
5.3 Loosen the three screws to remove the cable
clamp from the bottom half of the of the 20 mm
ECAM double cable assembly using a 3/8-inch
(10 mm) nut driver.
7
78-8140-3820-0-B
6.0 Cable Gauge Decal
Use the supplied cable gauge to determine the proper
cable clamp shells, washers and correct amount of
mastic needed to build a sealing collar.
6.1 Place cable gauge decal on cable as shown below. Be sure to place decal in-line with the cable.
Correct Incorrect
6.2 Read between the arrows on the decal to determine
the amount of mastic, clamp shells and washer
needed to properly assemble the 3M™External Cable
Assembly Module (ECAM) Double Cable Entry Port
ECAM-20 mm-D. This information can be recorded
in the log below.
Note: If the arrows on the decal point at the line
between two different sizes, use what is listed in
the box below the line. Also note that no clamp
shells are required if the gauge indicates ‘NONE’
in the shell column.
Note: If two different-sized cables are used, repeat this
procedure for the second cable and record this
information in the Cable 2 section of the log. LOG Mastic Cut
Length
Cable Clamp
Shells Washers
Cable 1
Cable 2
Note: To plug an unused port in the 27 mm Double ECAM assembly, use 14.0 inches (356 mm) of mastic
rolled into a cylinder.
878-8140-3820-0-B
7.0 Cable Clamp Shell Selection
7.1 Locate the clamp shells on the clamp shell
tree. Note that each clamp shell is numbered.
Remove the required clamp shell sets from part
tree. Make two sets of clamp shells for each
cable.
7.2 If multiple shells are required for a specific
cable size, locate these and assemble them into
sets.
7.3 Note the orientation of pin and socket and
assemble as shown.
7.4 Assemble the clamp shell(s) into the cable
clamp. Note the orientation of pin and socket
and assemble accordingly.
9
78-8140-3820-0-B
7.5 Assemble the clamp shell(s) onto the bottom
half of the cable housing. Note the orientation
of the pin and socket and assemble accordingly.
Note: Different-sized cables may require different-
sized clamps. Ensure that the correct clamp
set matches the cable when assembling in the
bottom housing and the cable clamp.
8.0 Cable Seal Installation
8.1 First clean the cable sheath thoroughly using an
alcohol wipe. Make sure the cable sheath is free
of any grease or dirt.
Note: Carefully follow health, safety and environmental
instructions as given on the Material Safety Data
Sheet for the alcohol wipe.
Scuff the first 3" of each cable sheath using
supplied sheath scuff. Ensure the cable is
completely scuffed around the perimeter of the
cable.
Hint: Scuffing is easier if you tear the sheath scuff in
narrow strips along the length of the strip.
Washer Selection
8.2 Locate and remove two washers on parts trees for each cable (four washers total). Note that washer
sizes are labeled on the washer as shown below. Note that inches are on one side of the washer and
millimeters are on the other side.
Note: See chart in section 6.2 for required washer.
10 78-8140-3820-0-B
Mastic Collar Build
8.3 Mark the cables approximately .25 inches (6
mm) from the end of sheath. This is to locate
the mastic collar.
8.4 Washers can be split along the notch for
installation over the cable.
8.5 Install two washers on each cable near the
sheath end as shown..
8.6 Unroll the mastic and measure out the required
amount. Repeat for second cable.
Note: See chart in section 6.2 for required mastic length.
Note: Warm mastic before use if temperature is below
50˚F (10˚C).
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